45.臨床上測量有無尿道過度移動（urethral hypermobility），常會作cotton swab test 並使用測角器（goniometer） 來測量尿道靜止及移動角度變化，下列何者為診斷尿道過度移動的準則（criteria）？
(A)a resting urethral angle > 30 degrees or a maximal straining angle > 30 degrees
(B)a resting urethral angle > 30 degrees and a maximal straining angle > 30 degrees
(C)a resting urethral angle > 30 degrees or a maximal straining angle > 45 degrees
(D)a resting urethral angle > 30 degrees and a maximal straining angle > 45 degrees